To do a Mehew means to humiliate one's self in front of a vast array of people. The phrase started when a young man performed an act of defecation upon a street in London, Islington after a pop concert.This uncontrolled defecation lead to widespread humiliation over hundreds of people as it was too funny not to tell anyone. Seconds before this act he uttered the immortal words: 'I Really Need A Poo'.

* A teenage boy urinates in the cafeteria in front of the whole school* 'HAHA He just did a Mehew, lets go tell more people'.

to do a mehew means to humiliate one's self in front of a vast array of people. This phrase started when a young man perfomed an act of unvoluntary defication upon a street in London, Isslington after a pop concert. This uncontrolled defication led to wide spread humiliation over hundreds of people as it was too funny not to tell anyone.

*a teenage biy urinates unvoluntarily in the cafeteria in front of the whole school* 'HAHA, he just did a Mehew, lets go tell more people'.